US20230151592A1 - Backflow preventer for water filtering equipment - Google Patents
Backflow preventer for water filtering equipmentDownload PDFInfo
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- US20230151592A1 US20230151592A1US17/526,342US202117526342AUS2023151592A1US 20230151592 A1US20230151592 A1US 20230151592A1US 202117526342 AUS202117526342 AUS 202117526342AUS 2023151592 A1US2023151592 A1US 2023151592A1
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- United States
- Prior art keywords
- check valve
- connectors
- water
- filtering equipment
- water filtering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/077—Arrangement of backflow preventing devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/13—Specific connectors
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/18—Specific valves
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
Definitions
- the present inventionrelates to water filtering equipment, and more particularly to a backflow preventer for water filtering equipment.
- ROreverse osmosis
- the RO water purifier currently knownhas several filtering units, the filtering unit comprises the filter, the RO membrane and the pressure tank, the filtering unit is provided with the connector, so that the connector can be connected through the water pipes. Therefore the filtering unit is connected to each other, and the connector can be used to connect the water source.
- the water supplied from the water sourceis filtered through the filter unit and the RO membrane to produce pure water.
- various impurities and harmful substancesthat cannot penetrate the filter element and the RO membrane when the concentrated waste water is discharged.
- the connectorcan only provide water to pass through, but has no backstop function. Therefore, if water backflow occurs during water production, it may cause the filtering unit being damaged, and the pure water is mixed with waste water.
- An objective of present inventionis to provide a backflow preventer for water filtering equipment.
- a backflow preventer for water filtering equipmenthas a plurality of filtering units, the filtering units connected among each other via at a plurality of connectors connected by at least one hose and connected to a water source via the at least one of the connectors, and at least one of the connectors has a check valve set, and the check valve set has a check valve and an unidirectional valve.
- the check valvehas an elastic tube with a duckbill valve at one end and is connected to a base at another end, and the base has a socket sleeved onto the elastic tube.
- the unidirectional valvehas a first main portion with a larger diameter and a second main portion with a smaller diameter, the diameter of the second main portion corresponding to an inner diameter of the socket of the check valve; after the check valve is placed in the first open end of the connector, the second main portion of the unidirectional valve is inserted into the socket of the check valve; and the unidirectional valve further has a through aperture passing through the first main portion and the second main portion.
- FIG. 1is a three-dimensional drawing of the water filtering equipment of a preferred embodiment according to the present invention.
- FIG. 2is a three-dimensional combination drawing of the connector and the check valve set of according to the preferred embodiment of the present invention.
- FIG. 3is a three-dimensional exploded view of the connector and the check valve set of according to the preferred embodiment of the present invention.
- FIG. 4is a sectional view of the combination of the connector and the check valve set being opened according to the preferred embodiment of the present invention.
- FIG. 5is the state drawing of the valve of according to the preferred embodiment of the present invention.
- FIG. 6is the backstop state diagram according to the preferred embodiment of the present invention.
- FIG. 7is a drawing of another preferred embodiment according to the present invention.
- FIG. 8is a three-dimensional exploded view of another preferred embodiment of the present invention.
- FIG. 9is a combined cross-sectional view of another preferred embodiment of the present invention.
- a water filtering equipment 10comprises a plurality of filtering units 11 , and the filtering units 11 are connected among each other via at a plurality of connectors 20 connected by at least one hose 21 and connected to a water source via the at least one of the connectors 20 . Furthermore, at least one of the connectors 20 has a check valve set 30 , and the check valve set 30 has a check valve 31 and an unidirectional valve 32 .
- the connector 20has a first open end 201 and a second open end 202 , the first open end 201 is an input end, and the second open end 202 is an output end. The first open end 201 is configured for being coupled with the check valve set 30 .
- the check valve 31has an elastic tube 311 , and the elastic tube 311 has an elastic tube with a duckbill valve 32 at one end and is connected to a base 313 at another end. Moreover, the base has a socket 314 sleeved onto the elastic tube 311 .
- the unidirectional valve 32has a first main portion 321 with a larger diameter and a second main portion 322 with a smaller diameter, and the diameter of the second main portion 322 is corresponding to an inner diameter of the socket 314 of the check valve 31 .
- the unidirectional valve 32further has a through aperture 323 passing through the first main portion 321 and the second main portion 322 .
- the diameter of the through aperture 323is significantly smaller than the diameter of the elastic tube 311 and the installation of the check valve 31 , a backflow prevention can be achieved.
- the water filtering equipment 10is a reverse osmosis (RO) water purifier
- the filtering unit 11is a filter, a RO membrane, or a pressure barrel
- check valve set 30is configured for being installed in the connector 20 .
- check valve set 30is mounted on the at least one of the connectors 20 for connecting to the water source.
- At least one of the connectors 20is a quick disconnect connector, as shown in FIG. 1 to FIG. 6 , so the hose 21 is able to be installed quickly.
- the at least one of the connectors 20is a locking connector, as shown in FIG. 4 , so the hose 21 is able to be screwed on the connector 20 .
- the second main portion 322 of the unidirectional valve 32is secured with the socket 314 of the check valve 31 .
- the elastic tube 311 of the check valve 31further has a protruding stopping ring 315 .
- valve 312 of the check valve 31is elongated as shown in FIG. 8 and FIG. 9 .
- the check valve 31is made of rubber, and the rubber has an 80 Shore A hardness.
- the check valve set 30is plugged and secured in the first open end 201 of the connector 20 .
- a forward hydraulic pressure with the elasticity provided by the check valve 31allows the valve 312 to be opened smoothly, as shown in FIG. 5 , so that the water can then flow from the valve 312 to the second open end 202 .
- the valve 312is affected by the reverse water pressure and closes immediately, as shown in FIG. 6 , which effectively stops the reverse flow and prevents the water from flowing back in the reverse direction.
- the unidirectional valve 32When the reverse water pressure is too high, the valve 312 is forced to open, the unidirectional valve 32 combined with the check valve 31 can prevent the check valve 31 from being flushed away from the connector 20 due to the high pressure generated by the reverse flow of water, also because the through aperture 323 has a significantly smaller diameter than the diameter of elastic tube 311 , which produces a higher pipe resistance at the through aperture 323 when the water flows backwards to prevent the water from breaking through the through aperture 323 in the reverse direction.
- the above mentioned backflow preventer for water filtering equipmenthas the following advantages: 1.
- the installation of the check valve set 30can prevent the water backflow during the use of the water filtering equipment 10 , so that the water quality can be ensured, and it can also prevent the water filtering equipment 10 from being damaged due to the backflow of water.
- the check valve set 30uses the check valve 31 and the unidirectional valve 32 to cooperate with each other to maximize the anti-backflow effect and prevent the high water pressure caused by backflow pushes the check valve 31 away from the connector 20 .
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Check Valves (AREA)
Abstract
Description
- The present invention relates to water filtering equipment, and more particularly to a backflow preventer for water filtering equipment.
- Rapid industrial development nowadays has relatively caused excessive pollution of air, land, and water sources. Although tap water undergoes precipitation, disinfection, and insolation procedures in the water purification plant before it is delivered to each user, these procedures cannot completely remove all kinds of pollutants, and it will endanger health when used. In order to ensure the safety of water, many people use all kinds of the water filtering equipment to filter the water before using it. Many of the water filtering equipment employs reverse osmosis (RO) water purifier.
- The RO water purifier currently known has several filtering units, the filtering unit comprises the filter, the RO membrane and the pressure tank, the filtering unit is provided with the connector, so that the connector can be connected through the water pipes. Therefore the filtering unit is connected to each other, and the connector can be used to connect the water source. The water supplied from the water source is filtered through the filter unit and the RO membrane to produce pure water. At the same time, various impurities and harmful substances that cannot penetrate the filter element and the RO membrane when the concentrated waste water is discharged.
- However, the above-mentioned conventional structure still has the following problems in practical applications: the connector can only provide water to pass through, but has no backstop function. Therefore, if water backflow occurs during water production, it may cause the filtering unit being damaged, and the pure water is mixed with waste water.
- Therefore, it is desirable to provide a backflow preventer for water filtering equipment to mitigate and/or obviate the aforementioned problems.
- An objective of present invention is to provide a backflow preventer for water filtering equipment.
- To achieve these and other objects of the present invention, A backflow preventer for water filtering equipment, the water filtering equipment has a plurality of filtering units, the filtering units connected among each other via at a plurality of connectors connected by at least one hose and connected to a water source via the at least one of the connectors, and at least one of the connectors has a check valve set, and the check valve set has a check valve and an unidirectional valve. The check valve has an elastic tube with a duckbill valve at one end and is connected to a base at another end, and the base has a socket sleeved onto the elastic tube. The unidirectional valve has a first main portion with a larger diameter and a second main portion with a smaller diameter, the diameter of the second main portion corresponding to an inner diameter of the socket of the check valve; after the check valve is placed in the first open end of the connector, the second main portion of the unidirectional valve is inserted into the socket of the check valve; and the unidirectional valve further has a through aperture passing through the first main portion and the second main portion.
- Other objects, advantages, and novel features of invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
FIG.1 is a three-dimensional drawing of the water filtering equipment of a preferred embodiment according to the present invention.FIG.2 is a three-dimensional combination drawing of the connector and the check valve set of according to the preferred embodiment of the present invention.FIG.3 is a three-dimensional exploded view of the connector and the check valve set of according to the preferred embodiment of the present invention.FIG.4 is a sectional view of the combination of the connector and the check valve set being opened according to the preferred embodiment of the present invention.FIG.5 is the state drawing of the valve of according to the preferred embodiment of the present invention.FIG.6 is the backstop state diagram according to the preferred embodiment of the present invention.FIG.7 is a drawing of another preferred embodiment according to the present invention.FIG.8 is a three-dimensional exploded view of another preferred embodiment of the present invention.FIG.9 is a combined cross-sectional view of another preferred embodiment of the present invention.- First, please refer to
FIGS.1-4 . Awater filtering equipment 10 comprises a plurality offiltering units 11, and thefiltering units 11 are connected among each other via at a plurality ofconnectors 20 connected by at least onehose 21 and connected to a water source via the at least one of theconnectors 20. Furthermore, at least one of theconnectors 20 has a check valve set30, and the check valve set30 has acheck valve 31 and anunidirectional valve 32. Theconnector 20 has a firstopen end 201 and a secondopen end 202, the firstopen end 201 is an input end, and the secondopen end 202 is an output end. The firstopen end 201 is configured for being coupled with thecheck valve set 30. Thecheck valve 31 has anelastic tube 311, and theelastic tube 311 has an elastic tube with aduckbill valve 32 at one end and is connected to abase 313 at another end. Moreover, the base has asocket 314 sleeved onto theelastic tube 311. Theunidirectional valve 32 has a firstmain portion 321 with a larger diameter and a secondmain portion 322 with a smaller diameter, and the diameter of the secondmain portion 322 is corresponding to an inner diameter of thesocket 314 of thecheck valve 31. After thecheck valve 31 is placed in the firstopen end 201 of theconnector 20, the secondmain portion 322 of theunidirectional valve 32 is inserted into thesocket 314 of thecheck valve 31. Furthermore, theunidirectional valve 32 further has a throughaperture 323 passing through the firstmain portion 321 and the secondmain portion 322. With the diameter of thethrough aperture 323 is significantly smaller than the diameter of theelastic tube 311 and the installation of thecheck valve 31, a backflow prevention can be achieved. - Moreover, the
water filtering equipment 10 is a reverse osmosis (RO) water purifier, and thefiltering unit 11 is a filter, a RO membrane, or a pressure barrel - Also, the
check valve set 30 is configured for being installed in theconnector 20. - Furthermore, the
check valve set 30 is mounted on the at least one of theconnectors 20 for connecting to the water source. - In addition, at least one of the
connectors 20 is a quick disconnect connector, as shown inFIG.1 toFIG.6 , so thehose 21 is able to be installed quickly. - Additionally, the at least one of the
connectors 20 is a locking connector, as shown inFIG.4 , so thehose 21 is able to be screwed on theconnector 20. - Furthermore, the second
main portion 322 of theunidirectional valve 32 is secured with thesocket 314 of thecheck valve 31. - Moreover, the
elastic tube 311 of thecheck valve 31 further has a protrudingstopping ring 315. - Additionally, the
valve 312 of thecheck valve 31 is elongated as shown inFIG.8 andFIG.9 . - Besides, the
check valve 31 is made of rubber, and the rubber has an 80 Shore A hardness. - In actual use, since the
check valve set 30 is plugged and secured in the firstopen end 201 of theconnector 20. When the water source is fed into thethrough aperture 323, a forward hydraulic pressure with the elasticity provided by thecheck valve 31 allows thevalve 312 to be opened smoothly, as shown inFIG.5 , so that the water can then flow from thevalve 312 to the secondopen end 202. When the water reverses its flow, thevalve 312 is affected by the reverse water pressure and closes immediately, as shown inFIG.6 , which effectively stops the reverse flow and prevents the water from flowing back in the reverse direction. When the reverse water pressure is too high, thevalve 312 is forced to open, theunidirectional valve 32 combined with thecheck valve 31 can prevent thecheck valve 31 from being flushed away from theconnector 20 due to the high pressure generated by the reverse flow of water, also because thethrough aperture 323 has a significantly smaller diameter than the diameter ofelastic tube 311, which produces a higher pipe resistance at thethrough aperture 323 when the water flows backwards to prevent the water from breaking through thethrough aperture 323 in the reverse direction. - The above mentioned backflow preventer for water filtering equipment has the following advantages: 1. The installation of the
check valve set 30 can prevent the water backflow during the use of thewater filtering equipment 10, so that the water quality can be ensured, and it can also prevent thewater filtering equipment 10 from being damaged due to the backflow of water. 2. Thecheck valve set 30 uses thecheck valve 31 and theunidirectional valve 32 to cooperate with each other to maximize the anti-backflow effect and prevent the high water pressure caused by backflow pushes thecheck valve 31 away from theconnector 20. - Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of invention as hereinafter claimed.
Claims (10)
1. A backflow preventer for water filtering equipment, the water filtering equipment comprising a plurality of filtering units, the filtering units connected among each other via at a plurality of connectors connected by at least one hose and connected to a water source via the at least one of the connectors, and at least one of the connectors having a check valve set, the check valve set having a check valve and an unidirectional valve; wherein:
the at least one of the connectors has a first open end and a second open end;
the check valve has an elastic tube with a duckbill valve at one end and is connected to a base at another end, and the base has a socket sleeved onto the elastic tube; and
the unidirectional valve has a first main portion with a larger diameter and a second main portion with a smaller diameter, the diameter of the second main portion corresponding to an inner diameter of the socket of the check valve; after the check valve is placed in the first open end of the connector, the second main portion of the unidirectional valve is inserted into the socket of the check valve; and the unidirectional valve further has a through aperture passing through the first main portion and the second main portion.
2. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the water filtering equipment is a reverse osmosis (RO) water purifier, and the filtering unit is a filter, a RO membrane, or a pressure barrel.
3. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the first open end of the at least one of the connectors is an input end, and the second open end of the at least one of the connectors is an output end.
4. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the check valve set is mounted on the at least one of the connectors for connecting to the water source.
5. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the check valve set is mounted on the at least one of the connectors for connecting to the filtering unit.
6. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the at least one of the connectors is a quick disconnect connector.
7. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the at least one of the connectors is a locking connector.
8. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the second main portion of the unidirectional valve is secured with the socket of the check valve.
9. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the elastic tube of the check valve further has a protruding stopping ring.
10. The backflow preventer for water filtering equipment as claimed inclaim 1 , wherein the check valve is made of rubber, and the rubber has an 80 Shore A hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/526,342US20230151592A1 (en) | 2021-11-15 | 2021-11-15 | Backflow preventer for water filtering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/526,342US20230151592A1 (en) | 2021-11-15 | 2021-11-15 | Backflow preventer for water filtering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20230151592A1true US20230151592A1 (en) | 2023-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/526,342PendingUS20230151592A1 (en) | 2021-11-15 | 2021-11-15 | Backflow preventer for water filtering equipment |
Country Status (1)
| Country | Link |
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| US (1) | US20230151592A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790028A (en)* | 1971-09-03 | 1974-02-05 | J Gardner | Hot liquid dispenser |
| US3807562A (en)* | 1972-07-07 | 1974-04-30 | G Goda | Check valve and filter assembly |
| US4038983A (en)* | 1976-01-26 | 1977-08-02 | Baxter Travenol Laboratories, Inc. | Fluid infusion pump |
| US6045759A (en)* | 1997-08-11 | 2000-04-04 | Ventana Medical Systems | Fluid dispenser |
| US20080087587A1 (en)* | 2006-10-12 | 2008-04-17 | Burrows Bruce D | Drainless reverse osmosis water purification system |
- 2021
- 2021-11-15USUS17/526,342patent/US20230151592A1/enactivePending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790028A (en)* | 1971-09-03 | 1974-02-05 | J Gardner | Hot liquid dispenser |
| US3807562A (en)* | 1972-07-07 | 1974-04-30 | G Goda | Check valve and filter assembly |
| US4038983A (en)* | 1976-01-26 | 1977-08-02 | Baxter Travenol Laboratories, Inc. | Fluid infusion pump |
| US6045759A (en)* | 1997-08-11 | 2000-04-04 | Ventana Medical Systems | Fluid dispenser |
| US20080087587A1 (en)* | 2006-10-12 | 2008-04-17 | Burrows Bruce D | Drainless reverse osmosis water purification system |
Non-Patent Citations (3)
| Title |
|---|
| Ellis, Pressure Transients in Water Engineering - A Guide to Analysis and Interpretation of Behavior, § 21.10 (Year: 2008)* |
| Fresh Water Systems - What Is a Flow Restrictor and How Does It Work (Year: 2024)* |
| Xiamen Better Silicone Rubber Co., Copyright 2016 (Year: 2016)* |
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